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Aircraft Parametric 3D Modeling and Panel Code Analysisfor Conceptual Deisgn
Linköping University, Department of Management and Engineering, Machine Design. Linköping University, The Institute of Technology.
Linköping University, Department of Management and Engineering, Machine Design. Linköping University, The Institute of Technology.
2008 (English)In: International Council of the Aeronautical Sciencess ICAS, 2008: Vol. 1, Anchorage, Alaska, USA: International Council of the Aeronautical Sciences (ICAS) , 2008, 159-167 p.Conference paper, Published paper (Other academic)
Abstract [en]

The ever fast growing information technology is enabling a re-definition of the early stages of aircraft design which have been restricted to mostly statistical and empirical approaches because of lengthy and costly simulation times. A novel framework is being developed at Linköping University offering greater comprehension by enabling a holistic view of the aircraft systems with a multidisciplinary analysis approach, involving a centralized easy to use interface. This paper will depict the modules involving an aerodynamic panel code solver integrated to a parametric CAD model. The connection between these tools is made fully automatic, meaning that any modification on the CAD model will with a press of button be aerodynamically analyzed in the panel solver, including re-meshing and re-writing of a input file and finally re-distributing the output file to all other modules involved in the framework.

Place, publisher, year, edition, pages
Anchorage, Alaska, USA: International Council of the Aeronautical Sciences (ICAS) , 2008. 159-167 p.
Keyword [en]
Aircraft design, Knowledge based CAD, Multidisciplinary Design, Panel Code Aerodynamic analysis
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:liu:diva-43595Local ID: 74351ISBN: 978-1-60560-715-3 (print)OAI: oai:DiVA.org:liu-43595DiVA: diva2:264455
Conference
26th Congress of the International Council of the Aeronautical Sciences, Anchorage, Alaska, USA, September 14-19, 2008,
Available from: 2009-10-10 Created: 2009-10-10 Last updated: 2014-02-27Bibliographically approved
In thesis
1. Design Reuse and Automation: On High Level CAD Modeling for Multidisciplinary Design and Optimization
Open this publication in new window or tab >>Design Reuse and Automation: On High Level CAD Modeling for Multidisciplinary Design and Optimization
2009 (English)Licentiate thesis, comprehensive summary (Other academic)
Abstract [en]

THIS THESIS EXPLORES novel CAD modeling methods for design reuse and tomation realization. It will be demonstrated that by applying the described methods, CAD models can be utilized as framework integrators in order to generate geometric input for various engineering analysis tools. Multidisciplinary design can as a result be facilitated in early design due to decreased manual model re-definitions. Furthermore, due to the complex dependency between analysis tools, certain product characteristics can only be evaluated by applying a holistic design approach. Therefore, by applying multidisciplinary design, the level of knowledge about the product will increase.

To simulate and evaluate the properties and behavior of an engineering product during design, the geometry has to be constantly re-estimated. CAD tools can be employed to produce the requested geometry. However simplifications introduced in the geometry, due to incomplete and imprecise knowledge available in early design, result in inaccurate geometries. Thus re-modeling has to occur in a frequent rate in order to achieve sufficiently accurate models. Hence CAD tool are traditionally applied in later stages of design when the geometry of the product is more or less defined and CAD is applied to generate drafting and technical drawings for manufacturing purposes

It is therefore proposed that geometries for repetitive components are stored in so called high level templates and instantiated in the CAD model parametrically. Upon instantiation, each instance can be modified parametrically. Given the fact that the instantiation process is automated, the deletion and replacement procedures are also automatic, enabling easier model modifications in the design process.

To estimate the gained advantage when applying the proposed methods, holistic design frameworks are implemented. The frameworks consist of a combination of various engineering tools which are integrated through a user interface. Given that an information flow between the design tools is implemented, many aspects of design is computed and optimized concurrently. Consequently in order to draw general conclusion concerning geometric modeling, two different design applications with dissimilar requirements are studied in this work, namely aircraft and industrial robots.

Place, publisher, year, edition, pages
Linköping: Linköping University Electronic Press, 2009. 51 p.
Series
Linköping Studies in Science and Technology. Thesis, ISSN 0280-7971 ; 1419
National Category
Mechanical Engineering
Identifiers
urn:nbn:se:liu:diva-52088 (URN)LIU-TEK-LIC-2009:27 (Local ID)978-91-7393-512-8 (ISBN)LIU-TEK-LIC-2009:27 (Archive number)LIU-TEK-LIC-2009:27 (OAI)
Presentation
2009-10-30, C3, C-huset, Campus Valla, Linköpings universitet, Linköping, 10:15 (English)
Opponent
Supervisors
Available from: 2009-12-22 Created: 2009-12-03 Last updated: 2010-04-07Bibliographically approved

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Tarkian, Mehdi

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